Update patchMultipleObjects.md

[johnzheng1975]

No description provided.

[k8s-ci-robot]

Hi @johnzheng1975. Thanks for your PR.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: johnzheng1975
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[k8s-ci-robot]

This PR has multiple commits, and the default merge method is: merge.
You can request commits to be squashed using the label: tide/merge-method-squash

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[johnzheng1975]

The purpose for this PR is:
adding test "labelSelector: key=value".
There is no similar examples. I think it is valuable to add some samples here.

You know, the kustomize has no useful logic like "if else", this labelSelector is very useful to implement this logic.

[johnzheng1975]

BTW, I already test pass. Pls review, thanks.

[koba1t]

Hi @ncapps
Could you review this PR?

[kundan2707]

/ok-to-test

[kundan2707]

/label tide/merge-method-squash